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Subwoofer Enclosures

The Crutchfield writing team is a group of full-time, in-house copywriters who share a passion for consumer electronics. In addition to creating the articles and videos you find in the Research area of the Crutchfield website, these hard-working and talented people write the informational copy for the products on our website and in the Crutchfield catalog. Our writers constantly research the latest products, technologies, and industry trends, so that we can bring you the most helpful information possible.

The type of bass you get from your component subwoofer doesn't depend on the woofer alone. You'll need a strong, tightly-constructed enclosure for optimum subwoofer performance. Speakers without an enclosure can't deliver full bass because the sound from the back of the speaker can cancel out some low frequencies emanating from the front of the speaker.

Using our box-building accessories, you might choose to construct your own box to create the enclosure size that you want. However, unless you're a talented craftsman with a solid understanding of enclosure volumes and other technical terms, you're better off purchasing a pre-made enclosure, like one of the Sound Ordnance models shown above.

Different types of boxes will produce different types of bass:

Sealed boxes: For deep, precise bass

A sealed box is an airtight enclosure housing your subwoofer. A sealed box is best for any music that demands tight, accurate bass. Expect flat response (not excessively boomy), deep bass extension, and excellent power handling. Since a sealed enclosure tends to require more power than a ported box, use an amplifier with ample wattage for optimum performance.

Ported boxes: For forceful bass

Ported boxes use a vent (called a port) to reinforce low bass response. You get more output than you would from a sealed box at any given amplifier wattage. Some people prefer the sound of ported boxes for rock, heavy metal, or any hard-driving music. Ported boxes can deliver deeper bass than sealed boxes, though they need to be much larger than sealed enclosures to accomplish that.

Bandpass boxes: Maximum slam

Bandpass boxes are a special type of ported box designed for maximum slam. The woofer is mounted inside a dual-chambered box (one chamber sealed, the other ported), with the sound waves emerging from the ported side. The sound that comes out of the port is extra loud within a narrow frequency range.

Because bandpass boxes are super efficient within that range, they tend to boom. Their aggressive sound is great for rap, reggae, and hard rock. Not all subwoofers work well in bandpass boxes, though; consult our product information or call one of our Advisors to be sure.

Free-air subwoofers

A free-air system consists of woofers mounted to a board attached to the rear deck or placed in the trunk against the rear seat. The trunk of the car acts as an enclosure which houses the subwoofer and isolates sound from the back of the speaker, solving the sound cancellation problem of subs without an enclosure.

Free-air systems save space and have flat frequency response. The woofer must be specifically designed for free-air use. The lack of a box makes them more convenient to install, but their power handling levels are usually much lower than their boxed counterparts.

Comments

eric from harvey

I have a ported double chamber box and two p2d4 12" Rockford fosgate subs with a Rockford fosgate t600-2 amp. I know most punch eq and bass boosters are speaker killers so I have it at minimum on amp and -5 on my deck. I have a factory infinity audio in my 2011 Hyundai genesis coupe... and one of my subs magnet cracked in half... I took it out because it was blown and when I took the sub apart the magnet was in half and the pieces of it were rubbing on the coiled wire in the sub so its shot. I am still pushing the one sub with all guts that would rattle the other taken out and put back in place to keep the sub box enclosed... wondering what my best option for premium bass for rap and techno would be without replacing the factory motor... has automatic climate control so I wont remove it

Posted on 7/18/2015 2:11:42 AM

Kevin McCarthy from detroit

I need a box made for 2 10s (circle ) and 1 15 square

Posted on 7/22/2015 6:54:50 PM

Alexander Hrabe from Crutchfield

Kevin, check out our selection of enclosures or if you're interested in building your own box, this article will help.

Posted on 7/23/2015 9:29:15 AM

brian from haines city

What box will my 2 15" L5 kicker solo Baric sound best !

Posted on 7/26/2015 11:09:50 AM

Alexander Hrabe from Crutchfield

Brian, awesome purchase! Unfortunately, we don't carry boxes for the Solo-Baric series (only pre-loaded boxes). If you want to build your own box, we can help you with that. Otherwise, give Kicker a call for a recommendation at (405) 624-8583.

Posted on 7/27/2015 11:14:10 AM

tim from columbia, tn

what is the best design and dementions for 15 inch. boss chaos series subwoofers??

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